Authorization Bypass Through User-Controlled Key Affecting n8n package, versions <2.27.4-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-MINIMOSLATEST-N8N-18284289
- published24 Jul 2026
- disclosed15 Jul 2026
Introduced: 15 Jul 2026
NewCVE-2026-59254 (opens in a new tab)How to fix?
Upgrade Minimos:latest n8n to version 2.27.4-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream n8n package and not the n8n package as distributed by Minimos.
See How to fix? for Minimos:latest relevant fixed versions and status.
n8n before 2.28.1 contains an information disclosure vulnerability where external secrets are incorrectly resolved in workflow node expressions outside credentials scope. Authenticated project editors can read plaintext external secret values by referencing them in node expressions without requiring explicit secrets access permissions.
References
- https://www.cve.org/CVERecord?id=CVE-2026-59254
- https://github.com/advisories/GHSA-2434-3x6q-8r99
- https://osv.dev/vulnerability/MINI-44vv-f3j5-vh5g
- https://osv.dev/vulnerability/CVE-2026-59254
- https://github.com/n8n-io/n8n/security/advisories/GHSA-2434-3x6q-8r99
- https://www.vulncheck.com/advisories/n8n-external-secrets-disclosure-via-workflow-node-expressions